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Method and apparatus for updating resource records in a name-server database

Active Publication Date: 2005-12-29
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] In a variation on this embodiment, if the granted lease expires, the name server deletes the updated resource-records from the name-server database, thereby keeping the global namespace up to date by removing stale information.

Problems solved by technology

Since the frequency of changes was expected to be fairly low, DNS was not designed to handle dynamic updates.
Unfortunately, this extension can cause the DNS name server to contain stale information.
This can be a serious problem, because it causes the DNS name-server database to contain stale information, which reduces the accuracy and usefulness of the DNS name-server database.
Unfortunately, this method works only if both the laptop and the DNS name server are configured with compatible refresh intervals, which can only be guaranteed if they are under the same administration.
Hence, “DNS Scavenging” is severely limited in its use.

Method used

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  • Method and apparatus for updating resource records in a name-server database
  • Method and apparatus for updating resource records in a name-server database
  • Method and apparatus for updating resource records in a name-server database

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Embodiment Construction

[0027] The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0028] The data structures and code described in this detailed description are typically stored on a computer readable storage medium, which may be any device or medium that can store code and / or data for use by a computer system. This includes, but is not limited to, magnetic and optical storage devices such as disk drives, magnetic tape, CD...

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Abstract

One embodiment of the present invention provides a system for updating resource records in a name-server database. During system operation, a network node creates an update-request message containing a set of resource-record updates, and a requested lease, which specifies the length of time for which the name server is being requested to store the resource-record updates. Next, the network node sends the update-request message to a name server, which is part of a distributed system that provides a global naming service. The network node then receives a response message from the name server, wherein the response message contains a granted lease, which specifies the length of time for which the name-server database will store the resource-record updates.

Description

BACKGROUND [0001] 1. Field of the Invention [0002] The present invention relates to the process of updating a name-server database. More specifically, the present invention relates to a method and apparatus for updating resource records in a name-server database by sending an update-request message to a name server, wherein the update-request message includes a requested lease, which specifies a length of time for which the name server is being requested to store the resource-record updates. [0003] 2. Related Art [0004] The Domain Name System (DNS) is a distributed system that provides a global naming service. Like many other services, DNS was designed for essentially a static network, in which the global namespace was expected to change infrequently. Since the frequency of changes was expected to be fairly low, DNS was not designed to handle dynamic updates. [0005] Subsequently, DNS has been extended to support dynamic updates. IETF (Internet Engineering Task Force) RFC (Request Fo...

Claims

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Application Information

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IPC IPC(8): H04L29/12
CPCH04L29/12066H04L61/2076H04L61/1511H04L29/12301H04L61/4511H04L61/5076
Inventor CHESHIRE, STUART D.SEKAR, KIREN RAVI
Owner APPLE INC
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